28600497540 has 72 divisors (see below), whose sum is σ = 89099588760. Its totient is φ = 7420667904.

The previous prime is 28600497521. The next prime is 28600497559. The reversal of 28600497540 is 4579400682.

It is a happy number.

28600497540 is a `hidden beast` number, since 2 + 8 + 60 + 0 + 49 + 7 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (28600497521) and next prime (28600497559).

It can be written as a sum of positive squares in 4 ways, for example, as 10635384384 + 17965113156 = 103128^2 + 134034^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2140525 + ... + 2153844.

Almost surely, 2^28600497540 is an apocalyptic number.

28600497540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28600497540 is an abundant number, since it is smaller than the sum of its proper divisors (60499091220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28600497540 is a wasteful number, since it uses less digits than its factorization.

28600497540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294421 (or 4294416 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 28600497540 in words is "twenty-eight billion, six hundred million, four hundred ninety-seven thousand, five hundred forty".